Side-by-Side Comparison
A-Series (ISO 216)
A0 vs. A5
Comparing 2 standards across 7 specifications. 7 key differences identified.
Comparing:
A0
A5
A0 is the base unit of the ISO 216 international paper standard, defined with an exact surface area of 1 square meter (1.000 m²) and dimensions of 841 × 1189 mm (33.1 × 46.8 inches). Operating on the 1:√2 Lichtenberg aspect ratio, it is the global standard for large architectural CAD plots, engineering schematics, and academic conference poster presentations.
A5 is an ISO 216 standard paper size measuring 148 × 210 mm (5.83 × 8.27 inches), created by cutting or folding an A4 sheet in half. It is the dominant global format for commercial spiral notebooks, daily planners, paperback novels, corporate marketing flyers, and restaurant menus.
Specification Comparison Table
7 Parameters| Parameter / Spec | ||
|---|---|---|
|
Width × Height (Metric)
|
841 × 1189 mm | 148 × 210 mm |
|
Width × Height (Imperial)
|
33.1 × 46.8 in | 5.83 × 8.27 in |
|
Nominal Surface Area
|
1.000 m² (1,000,000 mm²) | 0.03125 m² (1/32 m² — 31,250 mm²) |
|
Exact Aspect Ratio
|
1 : √2 (1 : 1.4142 — Lichtenberg ratio) | 1 : √2 (1 : 1.4142) |
|
Weight of Standard 80 gsm Sheet
|
80.0 grams exactly | 2.5 grams |
|
Halving Relationship
|
Cut in half across length yields 2 sheets of A1 | Cut in half yields 2 sheets of A6 |
|
Primary Applications
|
Architectural blueprints, GIS cartography, technical CAD schematics, academic research posters | Stationery notebooks (Moleskine, Rhodia), marketing flyers, paperback booklets, event programs |